Demystifying Large Language Models: A Deep Dive into ChatGPT and its Underlying Technology
The article delves into the complexities and mechanisms behind Large Language Models (LLMs) like ChatGPT, aiming to make technical information accessible to a general audience. When ChatGPT was launched, it took the tech world by surprise, showcasing the advanced capabilities of LLMs. While millions have interacted with such models, very few understand how they operate.
Traditionally, software is built by programmers through explicit, step-by-step instructions, but LLMs like ChatGPT work differently. They are based on neural networks trained on billions of words, making their internal operations somewhat enigmatic even to experts. While researchers are slowly gaining insights into these systems, a full understanding could take years or even decades.
The article first discusses word vectors, which are the foundational elements that allow language models to represent language. Word vectors encapsulate the semantics and contextual information of words, enabling the model to make meaningful predictions. Then, it dives into the “transformer architecture,” which serves as the core building block for LLMs. Transformers are responsible for understanding context and relationships between words, thereby enhancing prediction accuracy.
Lastly, the article explores the reason behind the need for large training datasets. High performance is a result of training the model on extensive collections of text, allowing the neural network to fine-tune its predictions, reason logically, and even simulate creativity to an extent. Understanding these individual components provides a broader view of how LLMs operate, although their complete inner workings still remain a subject of ongoing research.
Source: Lee, T. B., & Trott, S. (2023, July 27). Large language models, explained with a minimum of math and jargon. Understanding AI.